Help me to modify my PC

Hi guys. I have HP s3100y in my truck . I have added pcmcia adaptor for at&t wireless internet. My pc works perfect when truck is not in motion. Road vibration and shocks make problems. PC freezes a lot and hangs. Please suggest me what i need to change or modify to make pc work while rig is in motion.
Thanks a lot

Try mounting your drive 90 degrees to what it is now. If its horizontal, make it vertical. Vice versa. If that doest help, try putting something soft/springy under your pc. I know alot of people may object and say that will make it worse, but this is only to test. Its debatable what is the best mounting option, but you never know until you try.